<?php
/**
 * Admin dashboard.
 *
 * @package ShabanCodLimits
 */

defined( 'ABSPATH' ) || exit;

require_once SHABAN_COD_LIMITS_PATH . 'includes/class-shaban-cod-limits-support.php';

/**
 * Settings dashboard under WooCommerce > COD Limits.
 */
class Shaban_COD_Limits_Admin {

	const SLUG = 'shaban-cod-limits';

	/**
	 * Screen hook suffix.
	 *
	 * @var string
	 */
	private $hook = '';

	/**
	 * Hook everything up.
	 */
	public function __construct() {
		add_action( 'admin_menu', array( $this, 'menu' ), 99 );
		add_action( 'admin_init', array( $this, 'register' ) );
		add_action( 'admin_enqueue_scripts', array( $this, 'assets' ) );
		add_filter( 'plugin_action_links_' . plugin_basename( SHABAN_COD_LIMITS_FILE ), array( $this, 'action_links' ) );

		// Let shop managers save the settings too, not just administrators.
		add_filter( 'option_page_capability_shaban_cod_limits_group', array( $this, 'capability' ) );
	}

	/**
	 * Capability needed to save the settings.
	 */
	public function capability() {
		return 'manage_woocommerce';
	}

	/**
	 * Add the WooCommerce submenu page.
	 */
	public function menu() {
		$this->hook = add_submenu_page(
			'woocommerce',
			__( 'Shaban COD Limits', 'shaban-cod-limits' ),
			__( 'COD Limits', 'shaban-cod-limits' ),
			'manage_woocommerce',
			self::SLUG,
			array( $this, 'render' )
		);
	}

	/**
	 * Register the setting with the Settings API.
	 */
	public function register() {
		register_setting(
			'shaban_cod_limits_group',
			SHABAN_COD_LIMITS_OPTION,
			array(
				'type'              => 'array',
				'sanitize_callback' => array( 'Shaban_COD_Limits_Settings', 'sanitize' ),
				'default'           => Shaban_COD_Limits_Settings::defaults(),
			)
		);
	}

	/**
	 * Add a Settings link on the Plugins screen.
	 *
	 * @param string[] $links Existing action links.
	 * @return string[]
	 */
	public function action_links( $links ) {
		$url = admin_url( 'admin.php?page=' . self::SLUG );
		array_unshift(
			$links,
			'<a href="' . esc_url( $url ) . '">' . esc_html__( 'Settings', 'shaban-cod-limits' ) . '</a>',
			'<a href="' . esc_url( $url . '#scl-support' ) . '">' . esc_html__( 'Support', 'shaban-cod-limits' ) . '</a>'
		);
		return $links;
	}

	/**
	 * Load the dashboard CSS and JS on our own screen only.
	 *
	 * @param string $hook Current admin screen hook suffix.
	 */
	public function assets( $hook ) {
		if ( ! $this->hook || $hook !== $this->hook ) {
			return;
		}

		// WooCommerce's own product search + enhanced select.
		wp_enqueue_style( 'woocommerce_admin_styles' );
		wp_enqueue_script( 'selectWoo' );
		wp_enqueue_script( 'wc-enhanced-select' );

		wp_enqueue_style( 'shaban-cod-limits-admin', SHABAN_COD_LIMITS_URL . 'assets/css/admin.css', array( 'woocommerce_admin_styles' ), SHABAN_COD_LIMITS_VERSION );
		wp_enqueue_script( 'shaban-cod-limits-admin', SHABAN_COD_LIMITS_URL . 'assets/js/admin.js', array( 'jquery', 'wc-enhanced-select' ), SHABAN_COD_LIMITS_VERSION, true );

		wp_localize_script(
			'shaban-cod-limits-admin',
			'shabanCodLimitsData',
			array(
				'symbol' => html_entity_decode( get_woocommerce_currency_symbol(), ENT_QUOTES, 'UTF-8' ),
				'locale' => str_replace( '_', '-', get_user_locale() ),
				'i18n'   => array(
					'active'          => __( 'Active', 'shaban-cod-limits' ),
					'paused'          => __( 'Paused', 'shaban-cod-limits' ),
					'cod'             => __( 'cash on delivery', 'shaban-cod-limits' ),
					'codName'         => __( 'Cash on delivery', 'shaban-cod-limits' ),
					'selectedMethods' => __( 'the selected payment methods', 'shaban-cod-limits' ),
					'nothing'         => __( 'nothing', 'shaban-cod-limits' ),
					'chooseMethod'    => __( 'Choose at least one payment method to hide.', 'shaban-cod-limits' ),
					'pausedSummary'   => __( 'The rule is paused, so {gw} works as usual.', 'shaban-cod-limits' ),
					'above'           => __( 'above', 'shaban-cod-limits' ),
					'atLeast'         => __( 'at or above', 'shaban-cod-limits' ),
					'basisTotal'      => __( 'cart total (with shipping, tax and fees)', 'shaban-cod-limits' ),
					'basisSub'        => __( 'products subtotal (after discounts)', 'shaban-cod-limits' ),
					'sumAll'          => __( 'Hides {gw} when the {basis} is {cmp} {amount}.', 'shaban-cod-limits' ),
					'sumAnyInclude'   => __( 'Hides {gw} whenever the cart has a selected product.', 'shaban-cod-limits' ),
					'sumAnyExclude'   => __( 'Hides {gw} whenever the cart has a product other than the selected ones.', 'shaban-cod-limits' ),
					'whoInclude'      => __( 'selected products', 'shaban-cod-limits' ),
					'whoExclude'      => __( 'products other than the selected ones', 'shaban-cod-limits' ),
					'sumWho'          => __( 'Hides {gw} when the {who} add up to {cmp} {amount}.', 'shaban-cod-limits' ),
					'warnEmpty'       => __( 'Pick at least one product or category, otherwise this rule does nothing.', 'shaban-cod-limits' ),
					'lblOrder'        => __( 'Order value', 'shaban-cod-limits' ),
					'lblInclude'      => __( 'Value of the selected products', 'shaban-cod-limits' ),
					'lblExclude'      => __( 'Value of the other products', 'shaban-cod-limits' ),
					'setLimit'        => __( 'Enter a limit amount to turn this rule on. Until then, nothing is restricted.', 'shaban-cod-limits' ),
					'sending'         => __( 'Sending…', 'shaban-cod-limits' ),
					'unsaved'         => __( 'You have unsaved changes', 'shaban-cod-limits' ),
					'hiddenFor'       => __( '{gw} is hidden for this order.', 'shaban-cod-limits' ),
					'availFor'        => __( '{gw} stays available for this order.', 'shaban-cod-limits' ),
				),
			)
		);
	}

	/**
	 * Output the settings page.
	 */
	public function render() {
		if ( ! current_user_can( 'manage_woocommerce' ) ) {
			return;
		}

		$s        = Shaban_COD_Limits_Settings::get();
		$symbol   = html_entity_decode( get_woocommerce_currency_symbol(), ENT_QUOTES, 'UTF-8' );
		$gateways = WC()->payment_gateways() ? WC()->payment_gateways()->payment_gateways() : array();

		// Categories, labelled with their parents ("Parent › Child").
		$terms = get_terms(
			array(
				'taxonomy'   => 'product_cat',
				'hide_empty' => false,
			)
		);
		$terms = is_wp_error( $terms ) ? array() : $terms;

		$by_id = array();
		foreach ( $terms as $term ) {
			$by_id[ $term->term_id ] = $term;
		}

		$label_for = function ( $term ) use ( &$label_for, $by_id ) {
			$prefix = '';
			if ( $term->parent && isset( $by_id[ $term->parent ] ) ) {
				$prefix = $label_for( $by_id[ $term->parent ] ) . ' › ';
			}
			return $prefix . $term->name;
		};

		$categories = array();
		foreach ( $terms as $term ) {
			$categories[ $term->term_id ] = $label_for( $term );
		}
		asort( $categories, SORT_NATURAL | SORT_FLAG_CASE );

		// phpcs:ignore WordPress.Security.NonceVerification.Recommended
		$saved = isset( $_GET['settings-updated'] ) && 'true' === sanitize_text_field( wp_unslash( $_GET['settings-updated'] ) );

		// phpcs:ignore WordPress.Security.NonceVerification.Recommended
		$support_status = isset( $_GET['scl_support'] ) ? sanitize_key( wp_unslash( $_GET['scl_support'] ) ) : '';
		$current_user   = wp_get_current_user();

		require_once SHABAN_COD_LIMITS_PATH . 'views/settings-page.php';

		shaban_cod_limits_render_settings_page(
			array(
				'settings'   => $s,
				'symbol'     => $symbol,
				'gateways'   => $gateways,
				'categories' => $categories,
				'saved'      => $saved,
				'support'    => array(
					'name'    => $current_user->display_name,
					'email'   => $current_user->user_email,
					'topics'  => Shaban_COD_Limits_Support::topics(),
					'details' => Shaban_COD_Limits_Support::diagnostics_labels(),
					'flash'   => Shaban_COD_Limits_Support::flash( $support_status ),
					'contact' => Shaban_COD_Limits_Support::EMAIL,
				),
			)
		);
	}
}